96 entries under unprincipled topic. ×

5
fishy(adjective, wrong, dishonest, immoral, crooked)
4
mercenary(adjective, bad, wrong, dishonest, immoral)
4
bad(adjective, wrong, evil, dirty, corrupt)
4
dirty(adjective, bad, wrong, informal, rude)
4
reprobate(adjective, bad, wrong, evil, corrupt)
3
blameworthy(adjective, wicked, dishonest, immoral, unwarranted)
3
cheating(adjective, bad, wrong, corrupt, dishonest)
3
depraved(adjective, wrong, corrupt, wicked, immoral)
3
disreputable(adjective, bad, wrong, dishonest, immoral)
3
fake(adjective, bad, wrong, dishonest, immoral)
3
slick(adjective, wrong, informal, dishonest, immoral)
3
treacherous(adjective, low, dishonest, immoral, cunning)
3
two-faced(adjective, bad, wrong, corrupt, dishonest)
3
unjust(adjective, rude, wicked, dishonest, immoral)
3
unlawful(adjective, wicked, dishonest, immoral, unwarranted)
3
wrongful(adjective, wrong, evil, rude, wicked)
2
faithless(adjective, dishonest, immoral, rotten, fickle)
2
perfidious(adjective, dishonest, immoral, deceitful, rotten)
2
scam(adjective, wrong, informal, dishonest, immoral)
2
unfitting(adjective, immoral, improper, incompetent, ignorant)
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APASmart Define. (2015). unethical thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unethical/thesaurus/synonyms
ChicagoSmart Define. 2015. "unethical thesaurus" https://smartdefine.org/unethical/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, unethical thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unethical/thesaurus/synonyms>.
MLASmart Define. "unethical thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/unethical/thesaurus/synonyms>